Swamp

Crux of Fate

Choose one —
• Destroy all Dragon creatures.
• Destroy all non-Dragon creatures.

Spell Blast

Counter target spell with mana value X. (For example, if that spell's mana cost is {3}{U}{U}, X is 5.)

Blue Sun's Zenith

Target player draws X cards. Shuffle Blue Sun's Zenith into its owner's library.

Negate

Scry 1. (Look at the top card of your library. You may put that card on the bottom.)
Draw a card.

Millstone

Power Sink

Counter target spell unless its controller pays {X}. If that player doesn't, they tap all lands with mana abilities they control and lose all unspent mana.

Terror

Destroy target nonartifact, nonblack creature. It can't be regenerated.

Island

Whirlwind Denial

For each spell and ability your opponents control, counter it unless its controller pays {4}.

Jayemdae Tome

Compulsive Research

Target player draws three cards. Then that player discards two cards unless they discard a land card.